How to solve a trigonometry problem

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

What is the volume of a cone with a height of 6 cm in the radius of 2 cm